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## CBSE Class 9 Maths Chapter 4 Linear Equations in Two Variables Revision Notes

Revision is very important for better conceptual understanding and securing good marks, and for Revision, Revision Notes are always considered the best. Class 9 Maths Chapter 4 Linear Equations in Two Variables Revision Notes can be very beneficial for students to revise all their previously prepared chapters and concepts, especially during the examination times when they have to revise the whole syllabus in a limited time period.

We, at Swiflearn, provides you the best Revision Notes for CBSE Class 9 Maths Chapter  4 Linear Equations in Two Variables. Free CBSE Class 9 Maths Chapter 4 Notes provided here are prepared by Subject Matter Experts at Swiflearn who have a lot of experience in teaching. CBSE Class 9 Maths Chapter 4 Revision Notes are one of the most important pieces of study material that students can use as it will aid them to study better and reduce the level of stress that they face during the hectic year.

CBSE Class 9 Maths Chapter 4 Linear Equations in Two Variables Revision Notes by Swiflearn are so far the best and most reliable Revision Notes for CBSE Class 9 Maths Chapter 4 Linear Equations in Two Variables. These CBSE Class 9 Maths Chapter 4Revision Notes will surely make your learning exciting & convenient. Students can download CBSE Class 9 Maths Chapter 4 Revision Notes in PDF format, use them to revise all their previously learned concepts, and hence score better in their exams. #### General Form

ax + by = c, where a, b and c are real numbers and a and b are both not zero at the same time.

Solution of linear equation:-

1. Linear equation having one variable has 1 solution.

2. Linear equation having two variables has infinitely many solutions.

3. The solutions of ax + by = c are obtained as ordered pairs (p, q) such that ap + bq = c.

#### Graphical Representation of Linear Equation in Two Variables

A linear equation in two variables represents a straight line geometrically. The straight line is called the graph of the linear equation in two variables.

The solutions of a linear equation can be obtained by substituting different values for x in the equation to find the corresponding values of y.

Every point that lies on the line is a solution of the linear equation.

### CBSE Class 9 Maths Chapter 4 Linear Equations in Two Variables Revision Notes PDF 